Glass cutting rule



Jan; 4, 1938. HAUGHEY 2,104,301

GLASS CUTTING RULE Filed May 24, 1937 2 Sheets-Sheet 1 e7 2 wee-$44 92 I6/0 is of? 30/5 0 4 cf/5% Inventor Afiomeys Jan. 4, 1938.

J. A. HAUGHEY 2 Sheets-Sheet 2 Patented Jan. 4, 1938 UNITED STATESPATENT OFFICE Application May 24,

1 Claim;

This invention relates to a glass cutting tool for use on a glasscutting board, the general object of the invention being to provide aparallel ruler, the movable member of which can be quickly adjusted bypressure on a part thereof with a scale to measure the parallelmovement.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a plan view showing the invention on a cutting board.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a fragmentary plan view, with parts in section, showing thescale strip pinned to the edge of the board.

Figure 4 is a section on line 4-4 of Figure 1.

' As shown in the drawings, the rule includes the stationary section Iand the movable section 2, the two sections being connected together bythe plain link 3 and the control link 4. This link 4 is of substantiallysector shape and is formed with an extension 4', which is pivoted to themovable section 2. An arcuate slot 5 is formed in the link 4 and a studis carried by the stationary section I and passes through the slot toreceive a thumb nut 6, which when tightened, holds the link 4 inadjusted position, and this holds the 0 section 2 in adjusted position.A scale plate 1 is attached to the stationary section I adjacent thearcuate edge of the link 4 and a mark 8 is carried by the link 4 forcooperating with the scale of this plate for indicating the amount ofmovement of the movable section 2.

A tip 9 of brass or the like is fastened to one end of the section I andprojects therefrom, and is adapted to pass through the space between twoof the pins In of the wood scale strip at the top of the board A. A studII of brass or the like extends from the bottom of the section Iadjacent the other end thereof for fitting between the pins I2 whichconnect the scale strip I3 with the lower edge of the board. Thus theseparts 9 and II act to hold the section or member I in position on theboard.

A hole I4 is formed in that end of the section 1937, Serial No. 144,495

I which carries the projection II, this end projecting beyond the boardwhen the section I is in place, as does the corresponding end of thesection 2. This end of the section 2 carries a knob I5 and its other endis reduced, as shown at I6. so that it can pass between two of the pinsIt, as shown in dotted lines in Figure 1.

The movable rule I is advanced by placing the index finger in the holeI4 and pressing on the end of the rule 2 with the thumb. The retractingknob I5 is provided for returning the rule 2 to the closed position.

It is claimed for this rule that it is much simpler than the rule ingeneral use, which has a machined rack and pinion movement at each end;that it has smoother movement to adjust and fewer wearing surfaces; thatit can be produced for much less than the type of rule in common use;that by eliminating the necessity for the etched metal scale it can beused on boards of lower cos-t'than the present types; that it can beused as replacement equipment on boards already in use. It is muchlighter in weight and more easily handled. The scale indicates twice asmany positions as the metal scale on boards in general use.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall within the scope of the appended claim.

What is claimed is:

A rule of the class described comprising a stationary section,projections thereon engaging parts of a support to hold the samestationary, a movable section, links connecting the two sectionstogether and permitting movement of the movable section while the sameremains parallel to the stationary section, one link having a segmentalportion having an arcuate slottherein, a stud projecting from thestationary section and passing through. the slot, a nut on the stud. forlocking the said link in adjusted position and a scale attached to thestationary section and having an arcuate edge abutting the arcuate edgeof the segmental part and said segmental part having a mark thereon forcooperating with the scale.

JOSHUA A. HAUGHEY.

